Corroded Vessels Rlsk.Assessmeat

this assessment is like a risk of failure for a tank vessel type during its serviceable life associated with structure's strength corrosion defects.simulation technique of a performance function named the limit state function LSF which includes the main operating and dimensional parameters of the struture was preferred it was conducted according to the direct simulation method named latin hypercube sampling LHS and a well-known reliability method the FORM /sorm method first order reliability method /second order reliability method for the first a professional analysis package crystalball2000/free trial version was used to perform the simulation for the second one's self developed procedure biuilt on the principle of the form named cyclic recursive method for risk assessment implemented in matlab package was used to perform the simulation the limit state function is carried out using several already published failure models the corrosion decay mode land corrosion rate is done based on experimental values. the uncertainty and variability of the variable sand parameters on wich the model depends are evaluated by a sensitivity analysis.finally the study estimates the risk of damage as the failure probabilities for a number of different scenarios.

کلیدواژه ها:

LSF ، LHS ، FORM ، SORM ، corrosion rate